Classification as a tool of research :  proceedings of the 9th Annual meeting of the classification society University of Karlsruhe, 26-28 June 1985 / 
edited by W. Gaul and M. Schader 
 - Amsterdam :  North-Holland,  1986 
 - 502  p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>0444879803 
<br/><br/><label>LCCN: </label>86-2018 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research--Methodology--Congresses<br/>Discriminant analysis--Congresses<br/>Science--Classifications--Congresses